Intersecting gill box



Sept. 3, 1929. F. G. BERNHARDT INTERSECTING GILL BOX Filed May 2,- 192e2 'Sheets-heef 1 llatented Sept. 3, 1929.

FR-XEDRICH GU STAV BERNHARDT,

OIF LEISLIG, SAXONY, GERMANY.

IN'TERSECTING GLL BOX.

Application filed May 2, 1928, SeriaI No. 274,666, and in Germany May12, 1927.

This invention relates to interesting gillboxes of the kind wherein theupper set of screws and gill bars or fallers is mounted in anindependent framework so as to be capable of being moved 'verticallyupwards away from the lower set.

ln the gill boxes of this kind heretofore known, when the upper set ofgill bars or fallers and screws is raised from the lower set, thedriving gear for such upper set is disconnected from the driving gear ofthe lower set to which the driving power is applied, and means areprovided, such as a disc secured to one of the bottom screws of theupper set and having a peripheral projection adapted to engage with arecess in a corresponding disc secured to the shank of the adjacentupper screw of the lower set, for enabling it to be determined when theinterengaging gear wheels of the upper and lower sets are in the properrelative positions -for registering with one another when it is desiredto lower the upper set back on to the lower set.

According to my invention, in order to enable the gill bars or fallersand screws of the upper set to be permanently in driving connection withthe driving gear of the machine and at the same time to permit of theupper set of gill bars or fallers being moved vertically away from andtowards the lower set, the upper set is driven from the lower set bymeans of gearing which is slidable longitudinally on but is rotatablewithvvertical shafts that are driven fromthe lower set of gill bars orfallers and screws, so that the upper set can be raised away from andlowered on to the lower set during the operation of the machine withoutits being necessary to make any special adjustment of the interengaginggear wheels of the two sets before the upper set is lowered on to thelower set.-

rlhe accompanying drawing shows one constructional form of the subjectof the inven tion by way of example viz:

Figure l shows the head of an intersecting gill bof; made according tothe invention in its closed position.

Figure 2 shows the same in its lifted off position.

Figure 8 shows the whole machine in side elevation drawn to a reducedscale.

a isthe upper and o the lower part of the intersecting gill box. rTheupper part a can be raised and lowered by turning a hand` wheel a, bymeans of afscrew spindle s, and bevel wheels r1 and r2, the hand wheel7L being connected to the bevel wheel r2. in this operation, the upperpart a is held by means of guides e' on rods al, so that the raising andlowering can take place properly. During the raising and lowering, thetwo parts a and o of the intersecting gill box remain continually inengagement with their driving members7 so that when the lower screws andfallers are running the needle bars or fallers, and screws of the upperpart a move during the raising and lowering of such upper part. rEhedriving of the upper screw and fallers is effected by two pairs of bevelwheels el, e2. The wheels .e1 are connected to two vertical shafts Z.rIhese vertical shafts Z are provided with longitudinal grooves n, inwhich move keys or feathers 7c during the upward and downward motion ofthe upper part a. These keys or feathers are mounted in the hubs of thewheels .e3 and continuously drive the wheels .et and therewith the upperscrews and fallers. The hubs f of the wheels e3 are mounted in bearingsg which are screwed to the upper part a. In thismanner there is acontinuous drive of the upper part a during the raising and loweringthereof, so that any special adjustment of the screws of the upper partrelatively to the screws of the lower part during the lowering isunnecessary and breakage and interruptions yof working by reason ofinaccurate adjust-ment of the parts by the attendant are avoided.

Having now particularly described and ascertained the nature of .my saidinvention and in what manner the same is to be performed, l declare thatwhat I claim is 1. An intersecting gill box, wherein the upper set ofscrews yand gill bars or fallers is mounted in an independent frameworkso as to be capable of being moved vertically upwards away from thelower set, characterized in that the upper set of gill bars or fallersand screws is drivenfrom thelower set by means of gearing which isslidable longitudinally on but is rotatable with vertical shafts thatare driven from the lower set of gill bars or fallers and screws, sothat the upper set can be raised away from and lowered on to the lowerset during 'the operation of the machine. y

2. A constructional form of the intersectv 5 ing gill box claimed inClaim l, wherein the vertical shafts are provided with longitudinalgrooves which engage projections in .f

FRIEDRICH GUSTAV BERNHARDT.

